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Finding the Fourth Proportional to 70,179.72, 105,311.26 and 25,837.61

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Solution

The fourth proportional to 70,179.72, 105,311.26 and 25,837.61 is: 38,771.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,179.72 : 105,311.26 = 25,837.61 : x
  2. Step 2: Convert to fraction form
    70,179.72/105,311.26 = 25,837.61/x
  3. Step 3: Cross multiply
    70,179.72x = 105,311.26 × 25,837.61
  4. Step 4: Simplify right side
    70,179.72x = 2,720,990,770.23
  5. Step 5: Solve for x
    x = 2,720,990,770.23/70,179.72
  6. Step 6: Final answer
    x = 38,771.76

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.